Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_encoder_selection_dialog_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/ForumNokia/ImageConverter/src/EncoderSelectionDialog.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright © 2008 Nokia Corporation.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00004"></a>00004
<a name="l00005"></a>00005 <span class="comment">// INCLUDE FILES</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <aknlists.h></span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <ImageConversion.h></span>
<a name="l00008"></a>00008
<a name="l00009"></a>00009 <span class="preprocessor">#include "ImageConverter.hrh"</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include "EncoderSelectionDialog.h"</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include "ImageConverterEngine.h"</span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="keyword">const</span> TInt KNumMessages = 10;
<a name="l00014"></a>00014 <span class="keyword">const</span> TInt KMaxEncoderListLength = 80;
<a name="l00015"></a>00015 <span class="keyword">const</span> TInt KPeriodicTimerInterval(100000);
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">// ================= MEMBER FUNCTIONS =======================</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="comment">// C++ default constructor can NOT contain any code, that</span>
<a name="l00020"></a>00020 <span class="comment">// might leave.</span>
<a name="l00021"></a>00021 <span class="comment">//</span>
<a name="l00022"></a><a class="code" href="class_c_encoder_selection_dialog.html#a71951ff8e3c7defd95268123f3380e8f">00022</a> <a class="code" href="class_c_encoder_selection_dialog.html#a71951ff8e3c7defd95268123f3380e8f">CEncoderSelectionDialog::CEncoderSelectionDialog</a>(
<a name="l00023"></a>00023 RImageTypeDescriptionArray& aImageTypes,
<a name="l00024"></a>00024 TInt& aSelectedIdx ) :
<a name="l00025"></a>00025 iImageTypes( aImageTypes ), iSelectedIdx( aSelectedIdx )
<a name="l00026"></a>00026 {
<a name="l00027"></a>00027 }
<a name="l00028"></a>00028
<a name="l00029"></a><a class="code" href="class_c_encoder_selection_dialog.html#a9d07affe7e42d407ca05ca6b3da32477">00029</a> <a class="code" href="class_c_encoder_selection_dialog.html#a9d07affe7e42d407ca05ca6b3da32477">CEncoderSelectionDialog::~CEncoderSelectionDialog</a>()
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="keywordflow">if</span>(iPeriodic)
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 iPeriodic->Cancel();
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035 <span class="keyword">delete</span> iPeriodic;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// ----------------------------------------------------------</span>
<a name="l00040"></a>00040 <span class="comment">// CEncoderSelectionDialog::PreLayoutDynInitL()</span>
<a name="l00041"></a>00041 <span class="comment">// Initializing the dialog dynamically</span>
<a name="l00042"></a>00042 <span class="comment">// ----------------------------------------------------------</span>
<a name="l00043"></a>00043 <span class="comment">//</span>
<a name="l00044"></a><a class="code" href="class_c_encoder_selection_dialog.html#a647eab685e13921aed4b9077ff69405e">00044</a> <span class="keywordtype">void</span> <a class="code" href="class_c_encoder_selection_dialog.html#a647eab685e13921aed4b9077ff69405e">CEncoderSelectionDialog::PreLayoutDynInitL</a>()
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 SetEditableL(ETrue);
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="comment">// Initialize component array</span>
<a name="l00049"></a>00049 InitComponentArrayL();
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">// Create a control to display a list of messages</span>
<a name="l00052"></a>00052 iListBox = <span class="keyword">new</span> (ELeave) CAknSingleStyleListBox;
<a name="l00053"></a>00053 iListBox->SetContainerWindowL(*<span class="keyword">this</span>);
<a name="l00054"></a>00054 iListBox->ConstructL(<span class="keyword">this</span>);
<a name="l00055"></a>00055 iListBox->SetListBoxObserver(<span class="keyword">this</span>);
<a name="l00056"></a>00056
<a name="l00057"></a>00057 iListBox->CreateScrollBarFrameL(ETrue);
<a name="l00058"></a>00058 iListBox->ScrollBarFrame()->
<a name="l00059"></a>00059 SetScrollBarVisibilityL(CEikScrollBarFrame::EAuto,
<a name="l00060"></a>00060 CEikScrollBarFrame::EAuto);
<a name="l00061"></a>00061
<a name="l00062"></a>00062 Components().AppendLC(iListBox);
<a name="l00063"></a>00063 CleanupStack::Pop(iListBox);
<a name="l00064"></a>00064
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">// Create an array to hold the messages</span>
<a name="l00067"></a>00067 iMessageList = <span class="keyword">new</span> (ELeave) CDesCArrayFlat(KNumMessages);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// Give it to the control</span>
<a name="l00070"></a>00070 CTextListBoxModel* model = iListBox->Model();
<a name="l00071"></a>00071 model->SetItemTextArray(iMessageList);
<a name="l00072"></a>00072 model->SetOwnershipType(ELbmOwnsItemArray); <span class="comment">// transfer ownership</span>
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keywordtype">void</span> CEncoderSelectionDialog::PostLayoutDynInitL()
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="comment">// add the message to the list</span>
<a name="l00078"></a>00078 iListBox->SetRect( Rect() );
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>( KTab, <span class="stringliteral">"\t"</span> );
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keywordflow">for</span>( TInt i=0; i<iImageTypes.Count(); i++ )
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 TBuf<KMaxEncoderListLength> desc;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 desc.Append( KTab );
<a name="l00088"></a>00088 desc.Append( iImageTypes[i]->Description() );
<a name="l00089"></a>00089
<a name="l00090"></a>00090 iMessageList->AppendL( desc );
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// tell the control about the change</span>
<a name="l00094"></a>00094 iListBox->HandleItemAdditionL();
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="comment">// ----------------------------------------------------------</span>
<a name="l00099"></a>00099 <span class="comment">// CEncoderSelectionDialog::OkToExitL()</span>
<a name="l00100"></a>00100 <span class="comment">// This function ALWAYS returns ETrue</span>
<a name="l00101"></a>00101 <span class="comment">// ----------------------------------------------------------</span>
<a name="l00102"></a>00102 <span class="comment">//</span>
<a name="l00103"></a><a class="code" href="class_c_encoder_selection_dialog.html#ac7feccc5f2424a3503ba5655c0fe8360">00103</a> TBool <a class="code" href="class_c_encoder_selection_dialog.html#ac7feccc5f2424a3503ba5655c0fe8360">CEncoderSelectionDialog::OkToExitL</a>(TInt <span class="comment">/*aButtonId*/</span>)
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105 iSelectedIdx = iListBox->CurrentItemIndex();
<a name="l00106"></a>00106 <span class="keywordflow">return</span> ETrue;
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108
<a name="l00109"></a>00109 TInt CEncoderSelectionDialog::CountComponentControls()<span class="keyword"> const</span>
<a name="l00110"></a>00110 <span class="keyword"> </span>{
<a name="l00111"></a>00111 TInt count = 0;
<a name="l00112"></a>00112 <span class="keywordflow">if</span>( iListBox )
<a name="l00113"></a>00113 count = 1;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordflow">return</span> count;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a>00118 CCoeControl* CEncoderSelectionDialog::ComponentControl(TInt <span class="comment">/*aIndex*/</span>)<span class="keyword"> const</span>
<a name="l00119"></a>00119 <span class="keyword"> </span>{
<a name="l00120"></a>00120 <span class="keywordflow">return</span> iListBox;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a><a class="code" href="class_c_encoder_selection_dialog.html#a5ba12a4607e6b6d01445ac72491c4bcd">00123</a> TKeyResponse <a class="code" href="class_c_encoder_selection_dialog.html#a5ba12a4607e6b6d01445ac72491c4bcd">CEncoderSelectionDialog::OfferKeyEventL</a>(
<a name="l00124"></a>00124 <span class="keyword">const</span> TKeyEvent& aKeyEvent,TEventCode aType)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">if</span>( iListBox )
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (aKeyEvent.iCode == EKeyOK)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 iSelectedIdx = iListBox->CurrentItemIndex();
<a name="l00131"></a>00131 TryExitL(1);
<a name="l00132"></a>00132 <span class="keywordflow">return</span>( EKeyWasConsumed );
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 <span class="keywordflow">else</span>
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 <span class="keywordflow">return</span>( iListBox->OfferKeyEventL(aKeyEvent, aType) );
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 <span class="keywordflow">else</span>
<a name="l00140"></a>00140 <span class="keywordflow">return</span>( EKeyWasNotConsumed );
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="keywordtype">void</span> CEncoderSelectionDialog::SizeChanged()
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 iListBox->SetRect(Rect());
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keywordtype">void</span> CEncoderSelectionDialog::HandleResourceChange(TInt aType)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 CAknDialog::HandleResourceChange(aType);
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keywordflow">if</span> ( aType==KEikDynamicLayoutVariantSwitch )
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 TRect rect;
<a name="l00155"></a>00155 AknLayoutUtils::LayoutMetricsRect(
<a name="l00156"></a>00156 AknLayoutUtils::EMainPane,rect);
<a name="l00157"></a>00157
<a name="l00158"></a>00158 SetRect(rect);
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="keywordtype">void</span> CEncoderSelectionDialog::HandleListBoxEventL(CEikListBox* <span class="comment">/*aListBox*/</span>, TListBoxEvent aEventType)
<a name="l00164"></a>00164 {
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (aEventType==EEventEnterKeyPressed || aEventType==EEventItemDoubleClicked)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 iSelectedIdx = iListBox->CurrentItemIndex();
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">// NOTE: Need to cut method calling flow</span>
<a name="l00170"></a>00170 <span class="comment">// Wait as asynchronoysly 10ms and call TryExitL() after that </span>
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (!iPeriodic)
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 iPeriodic = CPeriodic::NewL(CActive::EPriorityIdle);
<a name="l00174"></a>00174 iPeriodic->Start(KPeriodicTimerInterval, KPeriodicTimerInterval,TCallBack(PeriodicTimerCallBack, <span class="keyword">this</span>));
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179
<a name="l00180"></a>00180 TInt CEncoderSelectionDialog::PeriodicTimerCallBack(TAny* aAny)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 <a class="code" href="class_c_encoder_selection_dialog.html">CEncoderSelectionDialog</a>* <span class="keyword">self</span> = <span class="keyword">static_cast<</span><a class="code" href="class_c_encoder_selection_dialog.html">CEncoderSelectionDialog</a>*<span class="keyword">></span>( aAny );
<a name="l00183"></a>00183 <span class="keyword">self</span>->iPeriodic->Cancel();
<a name="l00184"></a>00184 TRAPD(err,
<a name="l00185"></a>00185 self->TryExitL(1);
<a name="l00186"></a>00186 );
<a name="l00187"></a>00187 <span class="keywordflow">return</span> KErrNone;
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190
<a name="l00191"></a>00191
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